<!DOCTYPE html>

<html lang='en'>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="./lib/react.development16.4.0.js"></script>
    <script src="./lib/react-dom.development16.4.0.js"></script>
    <script src="./lib/babel.min.js"></script>
</head>

<body>
    <div id="app">
    </div>
    <script type="text/babel">
        class LikeMe extends React.Component {
            constructor(props) {
            super(props)
            this.state = {
                isLikeMe: false
            }
          }
           
           handerChange=()=>{
               this.setState({
                  isLikeMe:!this.state.isLikeMe
               })
           }

            render() {
            let text = this.state.isLikeMe ? '你喜欢我' : '我喜欢你'
            return (
                <div>
                <h2>{text}</h2>
                <button onClick={()=>this.setState({isLikeMe:!this.state.isLikeMe})}>点击改变我</button>
                </div>
                )
            }
        }
        
        const el = <LikeMe />
        ReactDOM.render(
            el,document.getElementById('app')
        );
    </script>
</body>

</html>